Occipitocervical measurements: correlation and consistency between multi-positional magnetic resonance imaging and dynamic radiographs

European spine journal

article

Rattanaporn Chamnan¹  Kunlavit Chantarasirirat¹  Permsak Paholpak¹  Kevin Wiley¹  Zorica Buser¹  Jeffrey C. Wang¹ 

[1] Department of Orthopaedic Surgery, Keck School of Medicine, University of Southern California;Department of Orthopaedic Surgery and Physical Medicine, Faculty of Medicine, Prince of Songkla University;Department of Orthopaedic Surgery, Somdech Phra Pinklao Hospital;Department of Orthopaedics, Faculty of Medicine, Khon Kaen University

关键词: Occipitocervical parameters;    Occipitocervical instability;    Multi-positional MRI;    Dynamic radiograph;   

DOI  :  10.1007/s00586-020-06415-6

来源: Springer

【 摘 要 】

To evaluate the reliability and validity of the multi-positional magnetic resonance imaging in measuring occipitocervical parameters using the standard cervical dynamic radiographs as a reference. Patients were included if they underwent both dynamic radiograph and cervical multi-positional MRI within a 2-week interval from January 2013 to December 2016. Twelve occipitocervical parameters were measured on both image modalities in all positions (neutral, flexion and extension): Posterior Atlanto-Dental Interval, Anterior Atlanto-Dental Interval (AADI), Dens-to-McRae distance, Dens-to-McGregor distance, Occipito-atlantal Cobb angle (C01 angle), Occipito-axis Cobb angle (C02 Cobb angle), Atlas-axis Cobb angle (C12 angle), Redlund-Johnell, Modified Ranawat, Clivus canal angle, Occiput inclination, and Occiput cervical distance. Pearson correlation and linear regression analysis were used to evaluate the correlation of both modalities for each parameter. A p value of  0.4) for Modified Ranawat, Clivus canal angle, C02 Cobb angle and C02 distance in all neck position. The intra-class correlation (ICC) of intra- and inter-observer showed good to excellent reliability, and ICCs were 0.67–0.98. Multi-positional MRI can be a reliable imaging option for diagnosis of occipitocervical instability or basilar invagination compared to standard dynamic radiographs.

【 授权许可】

Unknown